Diametral Tensile Strength and Reflectance Evaluation of Dental Composite Prototype Using Modified Dental Composite Procedures

Abstract:

Dental composite is used to restore disease or fracture tooth structure and modify tooth shape as well as color in order to enhance the aesthetic properties. This restoration should possess sufficient strength and translucency at the same time. Diametral tensile strength and reflectance of dental composite were related to the selection of three main components; filler, coupling agent and resin matrix. Quarsi-experimental. This study was a follow-up study whereby the filler silica-zirconia-alumina system were synthesized by sol-gel technique with precursors composition ratio 70:20:10. The surface of subsequent filler were modified by 3-mercaptoppropyltrimethoxysilane (MPTMS) and aminopropyltrimethoxysilane (APTES) then becoming group A and B respectively. In order to prepared the dental composite, acetone was used to reduce the viscosity of Bisphenol A Glycidyl Methacrylate (BisGMA) thus enable introducing more content of filler into resin matrix. Phase of crystalline and particle morphology were identified by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) consecutively. Universal Testing Machine (Lloyd) with crosshead speed 1mm/min was used to evaluate diametral tensile strength between two samples group. Dental composite contain filler-MPTMS coated were continuing tested to measure the reflectance values. Disc of each samples were prepared (n=3) with different thickness (1.5 mm and 3 mm) and same diameter (20 mm). Both diametral tensile strength and reflectance evaluation data were analysis by t-test unpaired. The result showed no statistically significant differences in diametral tensile strength between group A (47,6548 MPa) and B (41,4265 MPa). Reflectance evaluation also exhibited no statistically significant differences in dental composite contain filler-coated MPTMS with different thickness. Dental composite prototype based on diametral tensile strength and reflectance evaluation were potential to be used as alternative dental restoration.

• Periodical: Key Engineering Materials (Volume 829)
• Pages: 100-107
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.829.100
• Online since: December 2019
• Authors: Renny Febrida*, Wafa Sahilah, Sashya Adriana, Nina Djustiana, Elin Karlina, Yanwar Faza, Camellia Panatarani, I Made Joni
• Keywords: Dental Composite, Diametral Tensile Strength, Reflectance Evaluation

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